#include"Date.h"


Date::Date(int year, int month, int day )
{
	_year = year;
	_month = month;
	_day = day;

}
Date::Date(const Date& d)
{
	if (&d != this)
	{
		_year = d._year;
		_month = d._month;
		_day = d._day;
	}

	



}
Date::~Date()
{
	_year = 0;
	_month = 0;
	_day = 0;
}
Date& Date::operator=(const Date& d)
{

	_year = d._year;
	_month = d._month;
	_day = d._day;

	return *this;

}
int Date::GetMonthDay(int year, int month)
{
	int arr[13] = { 0,31,28,31,30,31,30,31,31,30,31,30,31 };
	if (month == 2 && year % 4 == 0 && year % 100 != 0 || year % 400 == 0)
	{
		return 29;
	}
	return arr[month];






}
Date& Date::operator++()
{
	*this += 1;
	return *this;




}
Date Date:: operator++(int)
{
	Date tmp = *this;
	*this += 1;
	return tmp;




}
Date Date::  operator--(int)
{

	Date tmp = *this;
	*this -= 1;
	return tmp;


}
Date& Date::operator--()
{
	*this -= 1;
	return *this;





}
bool Date::operator>(const Date& d)
{
	if (_year > d._year)
	{
		return true;



	}
	else
	{
		if (_year == d._year)
		{
			if (_month > d._month)
			{
				return true;


			}
			else
			{
				if (_month == d._month)
				{
					if (_day > d._day)
					{
						return true;


					}





				}





			}
		}



	}

	return false;

}
bool Date::operator==(const Date& d)
{

	return (_year == d._year && _month == d._month && _day == d._day);





}
bool Date::operator >= (const Date& d)
{
	return (*this > d) || (*this == d);



}
bool Date::operator < (const Date& d)
{
	return !(*this <= d);


}
bool Date::operator <= (const Date& d)
{
	return (*this < d) || (*this == d);




}
bool Date::operator != (const Date& d)
{

	return !(*this == d);

}
Date& Date::operator+=(int day)
{
	_day += day;
	while (_day > GetMonthDay(_month, _day))
	{
		_month++;
		if (_month==13)
		{
			_month = 1;
			_year++;
		}
		_day -= GetMonthDay(_month, _day);






	}

	return *this;

}
Date Date::operator+(int day)
{
	Date tmp = *this;
	tmp._day += day;
	while (tmp._day > GetMonthDay(tmp._month,tmp._day))
	{
		tmp._month++;
		if (tmp._month == 13)
		{
			tmp._month = 1;
			tmp._year++;
		}
		tmp._day -= GetMonthDay(_month, _day);






	}
	return tmp;



}
Date& Date::operator-=(int day)
{
	_day -= day;
	while (_day < 0)
	{
		_month--;
		if (_month == 0)
		{
			_month = 12;
			_year--;
		}
		_day += GetMonthDay(_year, _month);







	}
	return *this;





}
Date Date::operator-(int day)
{
	Date tmp=*this;
	tmp._day -= day;
	while (_day < 0)
	{
		tmp._month--;
		if (tmp._month == 0)
		{
			tmp._month = 12;
			tmp._year--;
		}
		tmp._day += GetMonthDay(tmp._year,tmp._month);







	}
	return tmp;





}
int Date::operator-(const Date& d)
{
	int flag=0 ;
	int count = 0;
	if (*this > d)
		flag = 1;
	if (*this < d)
		flag = -1;
	Date max = *this;
	Date min = d;
	if (min > max)
	{
		max = d;
		min = *this;
	}
	while (max>min)
	{
		min++;
		count++;
		
		




	}
	return flag * count;







}
void Date::print()
{
	cout << _year << " " << _month << " " << _day << endl;




}